Anti-friction journal-box



E. D. DRAPER. Anti-Friction Journal-Box.

No. 223,639. I Patented Jan. 20, I880.

mnmmmlmm UNITED STATES PATENT OFFICE.

ELLIS D. DRAPER, OF NORWOOD, MASSACHUSETTS.

ANTl -FRICTION JOURNAL-BOX.

SPECIFICATION forming part of Letters Patent No. 223,639, dated January 20, 1880.

Application filed October 9, 1879.

To all whom it may concern Be it known that I, ELLIS D. DRAPER, of Norwood,in the county of Norfolk, State of Massachusetts, have invented a certain new and useful Improvement .in Anti Friction Journal-Boxes for Sheaves, 850., of which the followingis adescriptiou sufficiently full, clear, andexact to enable any person conversant with the art or science to which my improvement appertains to make and use the same, referencebeing had to the accompanying drawings, forming a part of this specification, in whicht Figure 1 is an isometrical projection, and Fig. 2 a vertical transverse section.

Like letters indicate corresponding parts in the different figures of the drawings.

My inventionrelates more especially to that class of anti-friction journal-boxes which are employed in connection with the sheaves or wheels of blocks; and it consists in a novel construction of the parts, as hereinafter more fully set forth and claimed, by which a simpler, cheaper, and more effective device of this character is produced than is now in ordinary use.

In the drawings, A represents the body of the sheave or wheel; B, the hub; O, the flanges of the hub, and D the anti-friction rollers.

The rollers are disposed within a circular chamber formed in the hub, being arranged around .the outer walls of the chamber, as shown, to admit of the insertion of the axle or journal, and prevented from escaping longitudinally by the in wardly-projecting annular lips or flanges 0. Each of the rollers is designed to move independently of the others, not being jonrnaled in the box, but each roller is kept at a distance from the axial line of the hub by the adjoining rollers when the axle or journal is removed, thus leaving an unobstructed opening for the insertion of the axle, as required.

. The body of the wheel A, the hub B, and the flanges G are integral, or castin one piece, the hub being cast around the rollers, leaving them properly arranged in the chamber, the walls ofwhich are formed of solid cast metal, as described.

The construction of the box in the manner shown is accomplished by securing the rollers in the chamber-core before the casting is made in a mannerwhich will be readily understood by all familiar with such subjects without a more explicit description.

It will be seen that ajourual-box having all its parts except'the rollers cast in one piece, as described, is simpler, stronger, less liable to get out of order, and more economical in construction than when made in the ordinary way.

It will also be obvious that my improved box may be used. in many other positions than in a sheave or wheel, as shown, being well adapted to'meet nearly all the requirements of stationary anti-friction boxes.

Having thus explained my invention, what i I claim is- The method herein described of constructing anti-friction bearings for sheaves, consisting, essentially, in casting the hub and sheave in one piece around the anti-friction rollers, so:

arranged that they will not fall to the center of the journal-opening, as set forth.

ELLIS D. DRAPER.

Witnesses:

G. A. SHAW, WM. H. DIEHL. 

